Audio and video

If you have issues with the audio output and microphone or with your video transmission while using alfaview, we have some solutions that may help you resolve your problems.

If you can’t solve the problems yourself, please do not hesitate to contact our support team.

For general information and functions related to audio and video settings, please refer to the page Set up Camera and Microphone.

Audio

Microphone issues

If other participants are unable to hear you, the reason may be with your microphone.

If you use a communication device, please check if the microphone mute function is activated on your device. You can disable this function on the device itself.
Please check if any other program is currently using the microphone.

To verify that it is not a hardware defect, please check if your microphone is properly connected to your computer or mobile device and test it in another application.

In the alfaview app

Please check the main menu to see if the microphone is activated. If it is activated, the icon will be displayed in blue. If the icon is displayed grey, click on it to activate your microphone.

Please check in the settings if the correct microphone is selected.
Please check in the settings if the Microphone optimization is set too high. Use the Optimization wizard to manually optimize your microphone.

We recommend using the automatic Noise cancellation instead of the manual Microphone optimization.

Deactivate the Echo cancellation if you use a headset.

Operating systems and Webclient

Please check if your operating system or a security software is blocking the microphone usage. If so, add an exception for alfaview.
If you use the browser version of alfaview, please check if you have granted permission to access the microphone.
Please check if your Internet connection and network you are connected with.

My microphone is deactivated

If you can’t activate your microphone, please check the following:

Please check your system settings to ensure that the microphone access is enabled for alfaview.
If you use the Webclient of alfaview, please check if you have granted permission to access the microphone.
Please check your Internet connection and network.

If you see a red, crossed-out microphone symbol next to your name in the participant list, it means that a moderator has deactivated your microphone. Please notify the moderator in the chat to have the deactivation cancelled.

Audio cut-off

Sometimes, microphones may cut-off your audio transmittion right after joining a meeting. If this is the case, please adjust the system microphone level or gain. To do so, go to your system settings, then rejoin the meeting.

Loud background noises

If other participants draw attention on loud background noises being transmitted by your microphone when activated, please check the following settings:

Open the Audio tab in the Settings and check whether the options Echo cancellation and Noise cancellation are enabled. If the switch is blue, the option is enabled.
Activate the Treat current devices as a headset option in the advanced settings tab. Then, manually adjust the Microphone optimization.
Open the Signal processing in the advanced settings tab. If enabled, disable the Extended voice detection. Then, manually adjust the Microphone optimization.

Echo and feedback issues

When you use an open set-up like laptop microphones and speakers or hands-free meeting devices it is possible to experience echo and feedback issues. Please check the following setings and conditions to minimize potential error sources:

Open the Audio tab in the Settings and check whether the options Echo cancellation and Noise cancellation are enabled. If the switch is blue, the option is enabled.
Ensure all participants are using the latest version of alfaview.
Increase the distance between the speaker and microphone to prevent an unwanted audio pick-up through your microphone.
Avoid subwoofers in hands-free setups.
Lower the speaker volume.
Check your microphone’s position and adjust if necessary.
Consider using a USB headset. The usage of a headset can prevent echo and feedback issues and enhances your audio quality.

Adjust the volume

If other participants can’t hear you or if your audio is unclear the reason may be an insufficient audio volume.

Adjust the system volume level in your system settings.
Alternatively, adjust the volume output in the alfaview app directly. Open the Settings in the function menu. Adjust the volume slider next to the Sound icon until the volume is comfortable for you.

No audio output

To verify that it is not a hardware defect, please check if your microphone is properly connected to your computer or mobile device and test it in another application.

If you are unable to hear the other participants, please check the following:

In the alfaview app

Please check in the settings under the Speaker menu item if the correct speaker is selected. You can also test the functionality of your speaker by clicking on Test speaker.
Right-click on the video of another participant and check if the Mute for me checkbox is ticked. If so, remove it to unmute them.

If the Mute audio output icon is displayed in orange at the bottom left in the status menu, all participants and notification sounds are muted. Please click the icon to unmute alfaview.

Microsoft Windows

Please check the volume output of your computer in the settings or taskbar.
Please check the volume per application in the volume mixer.
- Start the Run dialog (key combination WIN + r).
- Enter the command sndvol and confirm by clicking on OK.
- Adjust the volume in the volume mixer and make sure that the alfaview app is not muted.

Please check the sound settings for communications activity.
- Start the Run dialog (key combination WIN + r).
- Enter the command mmsys.cpl and confirm by clicking on OK.
- Switch to the Communication tab and tick the option Do nothing.

Please check if your operating system or a security software is blocking the microphone usage. If so, add an exception for alfaview.

Video

If you can’t see the videos of the other participants, please check the following:

Please check if the Pause-Mode is activated. If it is, the Pause icon in the main menu will be displayed in orange. Click the icon to end the pause. The participants’ videos will be displayed again.

Please check in the main menu if your camera is deactivated. If the camera icon is displayed in grey, your camera is not active. Click the icon and select Camera on.

As alfaview follows the principle of You see me, I see you, you can only see the videos of other participants if your own camera is activated.

If there is no other video displayed but your own, it means that you are the only person in a main room or subgroup who has the permission to stream their video. There might be spectators in the room.

My camera is deactivated

If you can’t see your own video in alfaview, it may be due your camera or the settings on your computer or in alfaview.

To verify that it is not a hardware defect, please test the camera in another application.

Hardware

Please check if your camera is properly connected to your computer.
Please check if the camera lens is covered.

In the alfaview app

Please check in the main menu if the camera is activated. If it is, the camera icon will be displayed blue. If the icon is displayed grey, click on it to activate your camera.

Please check in your Video settings if the correct camera is selected.

Operating systems and browser version

Please check if your operating system or a security software is blocking the camera usage. If so, add an exception for alfaview.
If you use the browser version of alfaview, please check if you have granted permission to access the camera.
Please check if any other program is currently using the camera.
Please check if your Internet connection and network you are connected with.

Last updated on January 22nd, 2025, 03:34 pm